After failing to complete the TOWER I press return to camp, it starts loading the camp and then before it properly loads the game crashes I get an Ureal Engine crash report and the Minecraft launcher gets a popup sayin the game crashed due to an unexpected error.

This crash does not occur when I leave the TOWER after a cleared floor.

I still get the item what I choose when I reach a floor that gives a treasure reward despite the crash. After restarting the game the reward is in my inventory.